Datasheet > TPS65640

TPS65640

更新时间： 2023-09-03 20:33:54

品牌	Logo	应用领域
德州仪器 - TI		PC
页数	文件大小	规格书
62页	3586K
描述
用于笔记本 PC 和平板 PC 的具有数字 VCOM 缓冲器的 LCD 偏置

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替代型号

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TPS65640 数据手册

TI INFORMATION – SELECTIVE DISCLOSURE

TPS65640

www.ti.com

SLVSCE2 –NOVEMBER 2013

LCD Bias With Digital VCOM Buffer for Notebook PCs and Tablet PCs

Check for Samples: TPS65640

FEATURES

DESCRIPTION

The TPS65640 is a compact LCD bias solution

primarily intended for use in notebook and tablet PCs.

The device comprises two boost converters to supply

the LCD panel’s source driver and gate driver or level

shifter; one buck converters or a LDO regulator

alternatively to supply the time controller logic

voltages; a linear negative voltage regulator to supply

gate off voltage or provide negative voltage for

source driver; a programmable VCOM generator with

one high-speed amplifier; a gate voltage shaping

function and two high speed operational amplifiers.

•

2.5-V to 5.5-V Input Voltage Range

3.6 to 12.7 V Boost Converter (AV_DD

)

15 to 37 V Boost Converter with Temperature

Compensation (V_GH

–8 V to –3.8 V Linear Negative Voltage

Regulator (V_GLor NAV_DD

)

•

)

1.5-V to 3-V Alternative Buck Converter or Low

Dropout Regulator (V₂₅)

7 bits Programmable V_COMCalibrator With One

Integrated Buffer Amplifiers

All the regulators and V_COMvoltage outputs are

programmed through I²C interface and stored in the

TPS65640 integrated E²PROM. The TPS65640 is

available in 5.5-mm × 3.5-mm, 28-lead QFN package.

0.8 V to 5.1 V Programmable V_COMVoltage

Output for Full AV_DDApplication

–4.1 V to 0.2 V Programmable V_COMVoltage

Output for Positive and Negative AV_DD

Application

V_IN

Boost Converter1

AV_DD

•

Two Operational Amplifiers

Gate Voltage Shaping

Negative Charge

Pump Regulator

V_GL

Buck Converter

LDO Regulator

Programmable V_GHand V_COMTemperature

Compensation

V₂₅

•

T_CONReset Signal Generator With

Programmable Delay

V₂₅

Reset Generator

RST

V_GH

•

I²C Interface for E²PROM Programming

AV_DD

Boost Converter2

Operational Amplifier1

Operational Amplifier2

Thermal Shutdown

V_OUTA

V_OUTB

V_COM

V_GHM

Supports GIP and Non-GIP Displays

28 Pins, 5.5-mm × 3.5-mm 0.5-mm Pitch QFN

Programmable

V_COM+ Buffers

APPLICATIONS

•

Notebook PCs

Tablet PCs

V_GH

Gate Voltage Shaping

I²C Interface

I C

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...62

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TPS65640 替代型号

型号	品牌	替代类型	描述	数据表
TPS61177	TI	功能相似	适用于笔记本和平板电脑显示屏的 WLED 驱动器，具有固定模式调光功能
TPS65132	TI	功能相似	TPS65132 Single Inductor - Dual Output Power Supply
TPS65642	TI	功能相似	LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Monitors

与TPS65640相关器件

型号	品牌	获取价格	描述	数据表
TPS65640RHRR	TI	获取价格	用于笔记本 PC 和平板 PC 的具有数字 VCOM 缓冲器的 LCD 偏置 \| RHR
TPS65642	TI	获取价格	LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Monitors
TPS65642A	TI	获取价格	用于笔记本 PC、平板 PC 和监视器的具有集成伽马参考的 LCD 偏置
TPS65642AYFFR	TI	获取价格	用于笔记本 PC、平板 PC 和监视器的具有集成伽马参考的 LCD 偏置 \| YFF \|
TPS65642YFF	TI	获取价格	IC LIQUID CRYSTAL DISPLAY DRIVER, Display Driver
TPS65642YFFR	TI	获取价格	LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Monitors
TPS65642YFFT	TI	获取价格	LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Monitors
TPS65651-1/2/3	TI	获取价格	TPS65400-Q1 4.5- to 18-V Input Flexible Power Management Unit With PMBus/I2C Interface
TPS6565342RHDRQ1	TI	获取价格	具有集成开关的汽车类 4MHz、双路 3A 降压转换器 \| RHD \| 28 \| -40
TPS6565342RHDTQ1	TI	获取价格	具有集成开关的汽车类 4MHz、双路 3A 降压转换器 \| RHD \| 28 \| -40

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